A thread here asking about significant digits got me to thinking. I understand why they work the way they do with addition and subtraction, but multiplication and division are so easy that I've never bothered to think about it.(adsbygoogle = window.adsbygoogle || []).push({});

So - can someone explain why a three s.d. number times a two s.d. number gives a two s.d. number?

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# Homework Help: Significant digits

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